CN108306684A - The two-way free space laser communication network system that a wide range of multinode receives simultaneously - Google Patents
The two-way free space laser communication network system that a wide range of multinode receives simultaneously Download PDFInfo
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- CN108306684A CN108306684A CN201810078312.2A CN201810078312A CN108306684A CN 108306684 A CN108306684 A CN 108306684A CN 201810078312 A CN201810078312 A CN 201810078312A CN 108306684 A CN108306684 A CN 108306684A
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- rotary table
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- decomposing multiplexer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
- H04B7/18508—Communications with or from aircraft, i.e. aeronautical mobile service with satellite system used as relay, i.e. aeronautical mobile satellite service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0282—WDM tree architectures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention discloses the two-way free space laser communication network systems that a kind of a wide range of multinode receives simultaneously.Transceiver terminal is set at each node, center routing node is set between multiple nodes, center routing node connects each transceiver terminal；Center routing node includes outer rotary table, center processor, inner rotary table and Wave decomposing multiplexer；The external port of outer rotary table is directed at the transceiver terminal of each node, and each external port connects center processor through process of signal transmission component；Wave decomposing multiplexer is arranged on inner rotary table, center processor, which connects with motor and controls motor operation, drives inner rotary table rotation, realizes the external port on the input outlet alignment outer rotary table by Wave decomposing multiplexer.The present invention is while realizing long range, low-power consumption, multiple spot multi signal while the transmission of free space laser, solve transceiver terminal in previous scheme can not free switching technical barrier, construct can bi-directional transmission of information star network, be of great significance to modern space laser communication networking.
Description
Technical field
The present invention relates to technology of Free-space Laser Communication, can be received simultaneously more particularly, to a kind of a wide range of multinode
Two-way laser space communication network system.
Background technology
Free space laser communication is a kind of current emerging communication technology, using laser as carrier, in air or vacuum
Middle transfer data information has both the advantage of fiber optic communication and microwave communication, is that a kind of high speed, convenient, safety, networking flexibility show
For the communication technology.With development in science and technology, mankind's space operation gradually increases, the communication number between satellite-inter-satellite and satellite-ground
Increase year by year according to amount, required coverage area is also increasingly wider, a large amount of science data be required for by large capacity, high-speed, it is long away from
From Space-based information transmission technology realize that in this context, free space laser communication is gradually transported in navigator fix, aviation
Defeated, space flight measurement and control, even earth observation and survey of deep space etc. demonstrate out huge application potential.
Current multi-point space communication network still mainly by the way of microwave, under the limitation of carrier frequency, passes
Defeated rate at most can only achieve hundred Mb/s magnitudes from principle.In contrast, free space laser communication had both used the logical of space
Letter mode, freedom and flexibility, and carrier wave is used a laser as, ensure big message capacity, high-speed transfer, is that progress space high-speed is more
The excellent selection of constructing communication network between point.
At present both at home and abroad there is not yet the feasible laser space communication network plan report of system, some are single point-to-multipoint
Free space laser communication system scheme is proposed in succession, such as Abisayo O.Aladeloba in 2013 propose a kind of be applicable in
It is proposed with novel optical antenna in the wavelength-division multiplex point to multi--point FSO network structures of access net, 2016 Nian Jianghui woodss seminars
The scheme for building point to multi--point laser space communication system simultaneously, in a patent of Stephen G.Lambert in 2017
The networking plan etc. that bent-tube boiler link is built is referred to, the mobility flexibility of these networking plan nodes is not high, and designs
Complicated expensive, building the feasibility of link, there is also queries.Therefore, the present invention is based on wavelength-divisions to demultiplex Center Road by node
Technology proposes that a kind of two-way laser space communication network system that a wide range of multinode can receive simultaneously, the program solve list
The irreversible problem of transmission link in point-to-multipoint communication, has that terminal mobility is high, can flexibly switch transmission channel, node is set
The advantages that simple and clear and communication coverage substantially expands is counted, the needs of space laser multi-point flexible communications can be met.
Invention content
In order to solve the problems, such as background technology, the purpose of the present invention is to provide a kind of a wide range of multinodes simultaneously
The two-way free space laser communication network system received is realized a little using star-like connection to multiple spot simultaneous transmission information
Purpose, and support bidirectional transmit-receive.
The technical solution adopted by the present invention is as follows：
The present invention includes transceiver terminal and center routing node, at each node be arranged transceiver terminal, multiple nodes it
Between center routing node is set, pass through center routing node and connect each transceiver terminal；The center routing node includes outer
Turntable, center processor, inner rotary table and Wave decomposing multiplexer；Outer rotary table is equipped with N number of external port, and N number of external port is along outer rotary table
The circumferential peripheral surface for being uniformly arranged in outer rotary table at equal intervals, each external port is respectively aligned to the transceiver terminal of each node, each
External port is connected to center processor through respective process of signal transmission component；There are one the waves of 1 × (N-1) for arrangement on inner rotary table
Decomposition multiplex device, the input terminal and (N-1) a output end of Wave decomposing multiplexer are circumferentially uniformly arranged at equal intervals along inner rotary table
On inner rotary table peripheral surface；The output axis connection of inner rotary table bottom and motor, center processor connect with motor and control motor
Operation drives inner rotary table rotation, realizes on the outer rotary table that will be aligned required for the input terminal of Wave decomposing multiplexer and output end alignment
External port.
The outer rotary table and the concentric arrangement of inner rotary table.
The external port receives the light beam launched from transceiver terminal or launches light beam to transceiver terminal.
The external port receives the light beam launched from transceiver terminal, through membrane system Wave decomposing multiplexer as receiving terminal
It is incident on Wave decomposing multiplexer after beam splitting, is demultiplexed by respectively enteing remaining each membrane system wavelength-division after Wave decomposing multiplexer branch again
With device, then it is transferred to remaining each transceiver terminal.
The process of signal transmission component includes Acquisition tracking and pointing system and membrane system Wave decomposing multiplexer, external port according to
Secondary that center processor is connected to after membrane system Wave decomposing multiplexer, Acquisition tracking and pointing system, membrane system Wave decomposing multiplexer is along outer
On the line that turntable is circumferentially uniformly arranged on outer rotary table at equal intervals, and is arranged between external port and the outer rotary table center of circle.
The transceiver terminal of one of node emits multi-wavelength signals light and beacon simultaneously towards an external port is positive
The light beam that light is mixed to form, through corresponding external port reception after by membrane system Wave decomposing multiplexer beam splitting be multi-wavelength signals light and letter
Mark the two-way of light, the multi-wavelength signals light directive inner rotary table center of circle after beam splitting, the beacon after membrane system Wave decomposing multiplexer beam splitting
Optical transport is to Acquisition tracking and pointing system, and Acquisition tracking and pointing system receives and demodulate beacon beam, the number that will be carried in beacon beam
It is believed that breath is transmitted to center processor, center processor drives rotation inner rotary table according to data information, by the input on inner rotary table
The external port of light beam is received on end alignment outer rotary table, each output end is respectively aligned to remaining external port on outer rotary table；
So that the multi-wavelength signals light after membrane system Wave decomposing multiplexer beam splitting is input to wavelength-division demultiplexing by input terminal
Device, then output is incident on membrane system Wave decomposing multiplexer through space channel after Wave decomposing multiplexer branch, through membrane system Wave Decomposition
Multiplexer is emitted to the transceiver terminal of remaining node by external port without external port is transferred to after processing.To which the present invention passes through
Wave decomposing multiplexer and port setting, the process of signal transmission component on outer rotary table and port on interior outer rotary table and inner rotary table
More while reception the functions of realizing under a transmitting node are set, due to the sky between transceiver terminal and center routing node
Between transmission mode, with a wide range of multinode transmission advantage.
The transceiver terminal includes transceiver, signal source, electrooptic modulator, space-fiber coupling device and optical antenna,
The output end of transceiver is connected to space-fiber coupling device through electrooptic modulator, and space-fiber coupling device output end is through sky
Between channel couples be connected to optical antenna, signal source passes through cable connection with electrooptic modulator；More waves are simultaneously emitted by by transceiver
Long signal light and the light beam of beacon beam two-way mixing are input in electrooptic modulator, and electrooptic modulator is by the digital signal of signal source
In load-modulate to two-way light beam, the output beam of electrooptic modulator is transferred to space-fiber coupling device, through space-optical fiber
Coupling device is projected after being coupled into free space beam by optical antenna forward direction.
In the light beam of the transceiver terminal transmitting, beacon beam carries low speed data information, and multi-wavelength signals light is high exponent
The high-rate laser signal of type modulation.Low speed refers to the transmission rate of Mb/s magnitudes, and high-order pattern refers to quadrature phase shift keying signal
(QPSK) or the advanced modulations format such as quadrature amplitude modulation signal (QAM) refer to, the transmission speed not less than 10Gb/s magnitudes at a high speed
Rate.
Multiple transceiver terminals that a wavelength-division demultiplexes Centroid connection surrounding are arranged in the present invention, and letter is lost using to be passed
Number and beacon beam simultaneously emit mode, make Centroid terminal handler receive order data then carry out channel selection behaviour
Make, the terminal of the input terminal alignment transmitting optical signal of Wave decomposing multiplexer receive and branch forwards, each terminal
Can flexibly switch transmitting-receiving, realize that single node arrives space laser signal transmission while multinode, formation can two-way operation more piece
Free space laser communication network system between point.
The beneficial effects of the invention are as follows：
Present system is based on wavelength-division demultiplexing Center Road and is passed by node structure laser space communication multi-point bidirectional information
Defeated system can be realized a little simultaneously to the purpose of multicast communication free space laser signal, while keep each mobile terminal simultaneous
Preparation penetrates signal and receives the function of signal, realizes the transmitted in both directions of information.
The present invention while expanding communications range, while realizing long range, low-power consumption, multiple spot multi signal from
By traditional space laser transmission, at the same solve transceiver terminal in previous scheme can not free switching technical barrier, constructing can be double
To the star network of transmission information.
The center routing node of the present invention has both the function of autonomous switching space channel and automatic track aiming, flexibility choosing
Selecting property greatly enhances.
Each transceiver terminal and center routing node are the space nodes that can move freely in the present invention, are suitable for freely
The various occasions of laser space communication are of great significance to modern space laser communication networking.
Description of the drawings
Fig. 1 is the system space structural schematic diagram of the present invention.
Fig. 2 is the transceiver terminal structural schematic diagram in the present invention.
Fig. 3 is the system apparatus arrangements schematic diagram of the present invention.
Fig. 4 is the inner rotary table structural schematic diagram in the present invention.
In figure：1 is transceiver terminal, node centered on 2, and 11 be transceiver, and 12 be signal source, and 13 be electrooptic modulator, 14
It is optical antenna for space-fiber coupling device, 15,16 be multi-wavelength signals light, and 17 be beacon beam, and 21 be external port, and 22 are
Outer rotary table, 23 be tracking aiming capture systems, and processor centered on 24,25 be inner rotary table, and 26 be Wave decomposing multiplexer, and 27 be film
It is Wave decomposing multiplexer, 28 be input terminal, and 29 be output end.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, present invention specific implementation includes transceiver terminal 1 and center routing node 2, it is arranged at each node
Center routing node 2 is arranged between multiple nodes, each transceiver terminal 1 is connected by center routing node 2 for transceiver terminal 1.
As shown in Figure 3 and Figure 4, center routing node 2 includes outer rotary table 22, center processor 24, inner rotary table 25 and wavelength-division
Demultiplexer 26；Outer rotary table 22 is equipped with N number of external port 21, and N number of external port 21 is circumferentially uniformly arranged at equal intervals along outer rotary table 22
In the peripheral surface of outer rotary table 22, each external port 21 is directed at the transceiver terminal 1 of each node in free space respectively, each outer
Port 21 is connected to center processor 24 through respective process of signal transmission component；25 concentric cloth of outer rotary table 22 and inner rotary table
It sets, there are one the Wave decomposing multiplexers 26 of 1 × (N-1) for arrangement on inner rotary table 25, including an input terminal 28 and (N-1) a output
End 29, the input terminal 28 and (N-1) a output end 29 of Wave decomposing multiplexer 26 are circumferentially evenly distributed with cloth at equal intervals along inner rotary table 25
It sets on 25 peripheral surface of inner rotary table；The output axis connection of 25 bottom of inner rotary table and motor, center processor 24 connect simultaneously with motor
Controlling motor operation drives inner rotary table 25 to rotate, and the driving of 25 acceptor center processor 24 of inner rotary table is freely rotated, and realizes Wave Decomposition
The external port 21 on outer rotary table 22 that the input terminal 28 and output end 29 of multiplexer 26 are aligned required for being aligned.
As shown in figure 3, external port 21 receives the light beam launched from transceiver terminal 1 or launches light beam to transceiver terminal
1, the external port 21 on each outer rotary table can be emitted or be received, and realize two-way communication.External port 21 is used as receiving terminal,
The light beam launched from transceiver terminal 1 is received, Wave decomposing multiplexer 26 is incident on after 27 beam splitting of membrane system Wave decomposing multiplexer, is led to
Remaining each membrane system Wave decomposing multiplexer 27 is respectively enterd again after crossing 26 branch of Wave decomposing multiplexer, then is transferred to remaining each receipts
Send out terminal 1.
Process of signal transmission component includes Acquisition tracking and pointing system 23 and membrane system Wave decomposing multiplexer 27, external port 21 according to
It is secondary that center processor 24, membrane system wavelength-division demultiplexing are connected to after membrane system Wave decomposing multiplexer 27, Acquisition tracking and pointing system 23
Device 27 is circumferentially uniformly arranged on outer rotary table 22 at equal intervals along outer rotary table 22, and is arranged in 22 center of circle of external port 21 and outer rotary table
Between line on.
The transceiver terminal 1 of one of node emits 16 He of multi-wavelength signals light simultaneously towards an external port 21 is positive
The light beam that beacon beam 17 is mixed to form, through corresponding external port 21 reception after by 27 beam splitting of membrane system Wave decomposing multiplexer be multi-wavelength
The two-way of signal light 16 and beacon beam 17,16 directive inner rotary table of multi-wavelength signals light, 25 center of circle after beam splitting,
Beacon beam 17 after 27 beam splitting of membrane system Wave decomposing multiplexer is transferred to Acquisition tracking and pointing system 23, acquisition and tracking
Sighting system 23, which receives, simultaneously demodulates beacon beam 17, by the data information transfer carried in beacon beam 17 to center processor 24, in
Heart processor 24 drives rotation inner rotary table 25 according to data information, and the input terminal 28 on inner rotary table 25 is aligned on outer rotary table 22 and is connect
The external port 21 of light beam is received, each output end is respectively aligned to remaining external port 21 on outer rotary table 22；
So that the multi-wavelength signals light 16 after 27 beam splitting of membrane system Wave decomposing multiplexer is input to wavelength-division by input terminal 28
Demultiplexer 26, then output is incident on membrane system Wave decomposing multiplexer 27 through space channel after 26 branch of Wave decomposing multiplexer,
It is transferred to external port 21 after membrane system Wave decomposing multiplexer 27 is without processing, the transmitting-receiving that remaining node is emitted to by external port 21 is whole
End 1.
As shown in Fig. 2, transceiver terminal 1 includes transceiver 11, signal source 12, electrooptic modulator 13, space-fiber coupling dress
14 and optical antenna 15 are set, the output end of transceiver 11 is connected to space-fiber coupling device 14 through electrooptic modulator 13, empty
14 output end of m- fiber coupling device is connected to optical antenna 15, signal source 12 and electrooptic modulator 13 through space channel couples
Pass through cable connection；The light beam that multi-wavelength signals light 16 and the mixing of 17 two-way of beacon beam are simultaneously emitted by by transceiver 11 is input to electricity
In optical modulator 13, electrooptic modulator 13 is by the digital signal load-modulate to two-way light beam of signal source 12, electrooptic modulator
13 output beam is transferred to space-fiber coupling device 14, and free space beam is coupled into through space-fiber coupling device 14
It is projected afterwards by optical antenna 15 is positive, free space beam is that modulated multi-wavelength signals light 16 and beacon beam 17 are mixed to form
Light beam, so that the output of transceiver 11 is coupling-connected to through electrooptic modulator 13 and space-fiber coupling device 14 successively
Optical antenna 15.
The Acquisition tracking and pointing system 23 of specific implementation may include photodetector, demodulating system and position sensor, root
According to 17 Information locating transceiver terminal 1 of beacon beam accurate location and build space link.
In the specific implementation of the present invention, the multi-wavelength transceiver of communication band, Acquisition tracking and pointing may be selected in transceiver
System can be selected the track sights such as existing photodetector, position sensor and assemble, and Wave decomposing multiplexer can be selected existing
All kinds of wavelength de-multiplexer or multiplexer devices having, such as optical-fiber type wavelength-division optical multiplexer or demultiplexer (CWDM/DWDM), film-type
Wave decomposing multiplexer etc., existing various space light collimation devices and system can be selected in optical antenna, such as lens, optical telescope
It can be made up of mechanical processing Deng, inside and outside turntable structure, it is signal source, electrooptic modulator, space-fiber coupling device, optional
With various business components.
The embodiment of the present invention is as follows：
Center routing node is placed in network system center, connection 6 transceiver terminals of surrounding form a stellate reticulum
Network.Circumferential on the outer rotary table of Centroid uniformly to arrange 6 ports at equal intervals, each port is equipped with a set of Acquisition tracking and pointing
System (ATP), the system position corresponding terminal by detecting the direction of beacon beam, build communication link rapidly, while can be to letter
Mark optical information carries out demodulation process and is sent to center processor.The demultiplexing device of built-in 1 × 5 channel in inner rotary table,
The wavelength of output port is respectively 1548.5nm, 1549.3nm, 1550.1nm, 1550.9nm, 1551.7nm.By space-optical fiber
Coupling device is fixed on the spacing of 6 deciles on inner rotary table, one of them is connected with the input terminal of Wave decomposing multiplexer part,
Remaining 5 be connected with the output end of Wave decomposing multiplexer part.In transceiver terminal, electrooptic modulator is connect with signal source, signal source production
The pseudo-random binary sequence of raw 40Gb/s is loaded on electrooptic modulator and produces to simulate the modulated signal in practical application
Raw quadrature phase shift keying signal (QPSK), quadrature phase shift keying signal are coupled to free space by space-fiber coupling device,
By optical antenna forward direction transmission, space propagation.
When beacon beam of the signal light and wavelength that No. 15 road different wave length of transceiver terminal transmitting is multiplexed for 650nm, accordingly
External port receives signal and is detached beacon beam with signal light to be transmitted by membrane system Wave decomposing multiplexer, entrained by beacon beam
Low speed data information, which is demodulated, is sent to center processor, and center processor is sent out according to the order data received in order-driven
Input terminal is directed at No. 1 transceiver terminal and receives signal light by turntable rotation.After Wave decomposing multiplexer demultiplexes, Center Road is by saving
The signal light of 1548.5nm is transmitted to No. 2 transceiver terminals by point, the signal light of 1549.3nm be transmitted to No. 3 transceiver terminals ... according to
This analogizes, and the signal light of 5 road different wave lengths is respectively transmitted to specific transceiver terminal, realizes single node to sky while multinode
Between laser signal transmission.
When remaining transceiver terminal (2,3,4,5 or No. 6 terminals) emits transmission signal light, can be made by same step
Center processor receives the selection operation that order data then carries out channel, by the input terminal alignment transmitting letter of Wave decomposing multiplexer
The terminal of number light receive and branch forwarding, therefore each terminal can flexibly switch transmitting-receiving, and formation can two-way operation
Multinode between free space laser communication network system.
Thus above-mentioned implementation is as it can be seen that free space swashs while the present invention can realize long range, low-power consumption, multiple spot multi signal
Optical transport, and solve transceiver terminal in previous scheme can not free switching technical barrier, constructing can transmitted in both directions letter
There is the star network of breath it to protrude significant technique effect.
Embodiment in foregoing description can further change wavelength, different wave length carrier number and transmission rate etc., and
Embodiment be only the preferred embodiment of patent of the present invention is described, not to the conception and scope of patent of the present invention into
Row limits, and under the premise of not departing from Patent design thought of the present invention, professional and technical personnel in the art are to patent of the present invention
The various changes and modifications that technical solution is made, all belong to the scope of protection of the present invention.
Claims (6)
1. the two-way free space laser communication network system that a kind of a wide range of multinode receives simultaneously, including transceiver terminal (1)
With center routing node (2), it is characterised in that：Transceiver terminal (1) is set at each node, center is set between multiple nodes
Routing node (2) connects each transceiver terminal (1) by center routing node (2)；The center routing node (2) includes
Outer rotary table (22), center processor (24), inner rotary table (25) and Wave decomposing multiplexer (26)；Outer rotary table (22) is equipped with N number of outer
Port (21), N number of external port (21) is circumferentially uniformly arranged in the peripheral surface of outer rotary table (22) along outer rotary table (22) at equal intervals, each
External port (21) is respectively aligned to the transceiver terminal (1) of each node, and each external port (21) is through respective process of signal transmission group
Part is connected to center processor (24)；There are one the Wave decomposing multiplexer (26) of 1 × (N-1), wavelength-divisions for arrangement on inner rotary table (25)
One input terminal (28) of demultiplexer (26) and (N-1) a output end (29) are circumferentially uniformly arranged at equal intervals along inner rotary table (25)
On inner rotary table (25) peripheral surface；The output axis connection of inner rotary table (25) bottom and motor, center processor (24) and motor connect
Connecing and controlling motor operation drives inner rotary table (25) to rotate, and realizes the input terminal (28) and output end of Wave decomposing multiplexer (26)
(29) external port (21) on the outer rotary table (22) being aligned required for alignment.
2. the two-way free space laser communication network system that a kind of a wide range of multinode according to claim 1 receives simultaneously
System, it is characterised in that：The outer rotary table (22) and inner rotary table (25) concentric arrangement.
3. the two-way free space laser communication network system that a kind of a wide range of multinode according to claim 1 receives simultaneously
System, it is characterised in that：The external port (21) receives the light beam launched from transceiver terminal (1) or launches light beam to receipts
Send out terminal (1).
4. the two-way free space laser communication network system that a kind of a wide range of multinode according to claim 1 receives simultaneously
System, it is characterised in that：The process of signal transmission component includes Acquisition tracking and pointing system (23) and membrane system wavelength-division demultiplexing
Device (27), external port (21) are connected to center through membrane system Wave decomposing multiplexer (27), Acquisition tracking and pointing system after (23) successively
Processor (24), membrane system Wave decomposing multiplexer (27) are circumferentially uniformly arranged on outer rotary table (22) at equal intervals along outer rotary table (22),
And it is arranged on the line between external port (21) and outer rotary table (22) center of circle.
5. the two-way free space laser communication network system that a kind of a wide range of multinode according to claim 4 receives simultaneously
System, it is characterised in that：The transceiver terminal (1) of one of node emits multi-wavelength simultaneously towards an external port (21) is positive
The light beam that signal light (16) and beacon beam (17) are mixed to form is demultiplexed after corresponding external port (21) reception by membrane system wavelength-division
Device (27) beam splitting is the two-way of multi-wavelength signals light (16) and beacon beam (17), in multi-wavelength signals light (16) directive after beam splitting
Turntable (25) center of circle, the beacon beam (17) after membrane system Wave decomposing multiplexer (27) beam splitting are transferred to Acquisition tracking and pointing system
(23), Acquisition tracking and pointing system (23) receives and demodulates beacon beam (17), and the data information carried in beacon beam (17) is passed
Center processor (24) is transported to, center processor (24) drives rotation inner rotary table (25) according to data information, by inner rotary table (25)
On input terminal (28) alignment outer rotary table (22) on receive the external port (21) of light beam, each output end is respectively aligned to outer rotary table
(22) remaining external port (21) on；So that the multi-wavelength signals light (16) after membrane system Wave decomposing multiplexer (27) beam splitting passes through
Input terminal (28) is input to Wave decomposing multiplexer (26), then exports to enter through space channel after Wave decomposing multiplexer (26) branch
It is mapped to membrane system Wave decomposing multiplexer (27), external port (21) is transferred to after membrane system Wave decomposing multiplexer (27) is without processing, passes through
External port (21) is emitted to the transceiver terminal (1) of remaining node.
6. the two-way free space laser communication network system that a kind of a wide range of multinode according to claim 1 receives simultaneously
System, it is characterised in that：The transceiver terminal (1) includes transceiver (11), signal source (12), electrooptic modulator (13), space-light
The output end of fine coupling device (14) and optical antenna (15), transceiver (11) is connected to space-light through electrooptic modulator (13)
Fine coupling device (14), space-fiber coupling device (14) output end are connected to optical antenna (15) through space channel couples, letter
Number source (12) passes through cable connection with electrooptic modulator (13)；Multi-wavelength signals light (16) and letter are simultaneously emitted by by transceiver (11)
The light beam of mark light (17) two-way mixing is input in electrooptic modulator (13), and electrooptic modulator (13) is by the number of signal source (12)
Signal loading is modulated on two-way light beam, and the output beam of electrooptic modulator (13) is transferred to space-fiber coupling device (14),
It is projected after space-fiber coupling device (14) is coupled into free space beam by optical antenna (15) is positive.
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| CN201810078312.2A CN108306684B (en) | 2018-01-26 | 2018-01-26 | Bidirectional free space laser communication network system capable of receiving multiple nodes simultaneously in large range |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910550A (en) * | 2021-01-28 | 2021-06-04 | 浙江大学 | Multi-node space laser communication method based on dual wavelengths |
| CN114024606A (en) * | 2022-01-05 | 2022-02-08 | 季华实验室 | Laser communication receiving system, method, executing device and electronic equipment |
| CN115314066A (en) * | 2022-07-20 | 2022-11-08 | 中国科学院微小卫星创新研究院 | Measurement and control communication device and method for deep space exploration spacecraft |
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| CN114024606B (en) * | 2022-01-05 | 2022-06-03 | 季华实验室 | Laser communication receiving system, method, executing device and electronic equipment |
| CN115314066A (en) * | 2022-07-20 | 2022-11-08 | 中国科学院微小卫星创新研究院 | Measurement and control communication device and method for deep space exploration spacecraft |
| CN115314066B (en) * | 2022-07-20 | 2023-10-27 | 中国科学院微小卫星创新研究院 | Measurement and control communication device and method for deep space exploration spacecraft |
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